Matthew 27.51  And, behold, the veil of the temple was rent in twain from the top to the bottom; and the earth did quake, and the rocks rent;  52  And the graves were opened; and many bodies of the saints which slept arose,  53  And came out of the graves after his resurrection, and went into the holy city, and appeared unto many.  Why was the veil ripped? What does it mean? Ephesians 2:8-22 For by grace are ye saved through faith; and that not of yourselves: it is the gift of God: 9 Not of works, lest any man should boast. 10 For we are his workmanship, created in Christ Jesus unto good works, which God hath before ordained that we should walk in them. 11 Wherefore remember, that ye being in time past Gentiles in the flesh, who are called Uncircumcision by that which is called the Circumcision in the flesh made by hands; 12 That at that time ye were without Christ, being aliens from the commonwealth of Israel, and strangers from the covenants of promise, having no hope, and without God in the world: 13 But now in Christ Jesus ye who sometimes were far off are made nigh by the blood of Christ. 14 For he is our peace, who hath made both one, and hath broken down the middle wall of partition between us; 15 Having abolished in his flesh the enmity, even the law of commandments contained in ordinances; for to make in himself of twain one new man, so making peace; 16 And that he might reconcile both unto God in one body by the cross, having slain the enmity thereby: 17 And came and preached peace to you which were afar off, and to them that were nigh. 18 For through him we both have access by one Spirit unto the Father. 19 Now therefore ye are no more strangers and foreigners, but fellowcitizens with the saints, and of the household of God; 20 And are built upon the foundation of the apostles and prophets, Jesus Christ himself being the chief corner stone; 21 In whom all the building fitly framed together groweth unto an holy temple in the Lord: 22 In whom ye also are builded together for an habitation of God through the Spirit. Hebrews 4:9 There remaineth therefore a rest to the people of God. 10 For he that is entered into his rest, he also hath ceased from his own works, as God did from his. 11 Let us labour therefore to enter into that rest, lest any man fall after the same example of unbelief. 12 For the word of God is quick, and powerful, and sharper than any twoedged sword, piercing even to the dividing asunder of soul and spirit, and of the joints and marrow, and is a discerner of the thoughts and intents of the heart. 13 Neither is there any creature that is not manifest in his sight: but all things are naked and opened unto the eyes of him with whom we have to do. 14 Seeing then that we have a great high priest, that is passed into the heavens, Jesus the Son of God, let us hold fast our profession. 15 For we have not an high priest which cannot be touched with the feeling of our infirmities; but was in all points tempted like as we are, yet without sin. 16 Let us therefore come boldly unto the throne of grace, that we may obtain mercy, and find grace to help in time of need. Hebrews 6:17 Wherein God, willing more abundantly to shew unto the heirs of promise the immutability of his counsel, confirmed it by an oath: 18 That by two immutable things, in which it was impossible for God to lie, we might have a strong consolation, who have fled for refuge to lay hold upon the hope set before us: 19 Which hope we have as an anchor of the soul, both sure and stedfast, and which entereth into that within the veil; 20 Whither the forerunner is for us entered, even Jesus, made an high priest for ever after the order of Melchisedec. Hebrews 10:14-22 For by one offering he hath perfected for ever them that are sanctified. 15 Whereof the Holy Ghost also is a witness to us: for after that he had said before, 16 This is the covenant that I will make with them after those days, saith the Lord, I will put my laws into their hearts, and in their minds will I write them; 17 And their sins and iniquities will I remember no more. 18 Now where remission of these is, there is no more offering for sin. 19 Having therefore, brethren, boldness to enter into the holiest by the blood of Jesus, 20 By a new and living way, which [the “entering” in v19] he hath consecrated for us, through the veil, that is to say, his flesh; 21 And having an high priest over the house of God; 22 Let us draw near with a true heart in full assurance of faith, having our hearts sprinkled from an evil conscience, and our bodies washed with pure water. ... https://www.youtube.com/watch?v=fX0FE71zDv8

This sermon was preached by Jonathan Edwards in New England many decades ago and had a very powerful effect on the audience who are reputed to have cried out "Mercy, Mr Edwards, Mercy" as they fell under conviction of the Holy Spirit because of their sin. This sermon will help you understand the holiness of God and the sinfulness of man. Have you repented of your sin and trusted Jesus Christ? Are you walking in holiness?