1 Now the LORD said to Moses, “Cut out for yourself two stone tablets like the former ones, and I will write on the tablets the words that were on the former tablets which you shattered. 2 “So be ready by morning, and come up in the morning to Mount Sinai, and present yourself there to Me on the top of the mountain. 3 “No man is to come up with you, nor let any man be seen anywhere on the mountain; even the flocks and the herds may not graze in front of that mountain.” 4 So he cut out two stone tablets like the former ones, and Moses rose up early in the morning and went up to Mount Sinai, as the LORD had commanded him, and he took two stone tablets in his hand. 5 The LORD descended in the cloud and stood there with him as he called upon the name of the LORD.6 Then the LORD passed by in front of him and proclaimed, “The LORD, the LORD God, compassionate and gracious, slow to anger, and abounding in lovingkindness and truth; 7 who keeps lovingkindness for thousands, who forgives iniquity, transgression and sin; yet He will by no means leave the guilty unpunished, visiting the iniquity of fathers on the children and on the grandchildren to the third and fourth generations.” 8 Moses made haste to bow low toward the earth and worship. 9 He said, “If now I have found favor in Your sight, O Lord, I pray, let the Lord go along in our midst, even though the people are so obstinate, and pardon our iniquity and our sin, and take us as Your own possession.”
God is indeed gracious, and full of mercy. He also mentions that He will not leave the guilty unpunished. That seems like a huge contradiction, but it’s not really. The guilty are those who have not repented of their sins, and asked for forgiveness. It is those who are dwelling in their sin, refusing to turn away from it. That’s not a good place to be with sin, and a worse place to be with God. Get out, turn around, and run hard after God. He will always receive you back.