Numbers 14:18 - God's Great Love And Mercy

The LORD is longsuffering, and of great mercy, forgiving iniquity and
transgression, and by no means clearing the guilty, visiting the iniquity of
the fathers upon the children unto the third and fourth generation. Num
14:18 (KJV)

I, the Lord, am not an angry God.  I abound in love and forgive sin and
rebellion.  But I will not stop the consequences of the sins of the parents
on their children and grandchildren down to the third and fourth generation.
Num 14:18 (CWB)

God is merciful and does forgive, not by overlooking iniquity but by
providing a substitute so that He may be both the Just One and the Justifier
of those who believe (Rom 3:21-26), [Wycliffe Bible Commentary]

Moses bases his appeal for mercy not on any merit in Israel, but on God's
own character. God cannot abandon His people: to abandon them would be to
fail in the eyes of others. Besides, the Lord is by nature a God of love and
forgiveness, who deals justly, but remembers mercy.
This prayer should comfort us in times of personal failure. God will not
abandon us: He has committed Himself to us publicly in the Gospel. Besides,
God is loving and merciful. We may be disciplined but we will not be
rejected. [Victor Bible Reader's Companion]

Moses pleaded with God, asking him to forgive his people. His plea reveals
several characteristics of God: (1) God is immensely patient; (2) God's love
is one promise we can always count on; (3) God forgives again and again; and
(4) God is merciful, listening to and answering our requests. God has not
changed since Moses' day. Like Moses, we can rely on God's love, patience,
forgiveness, and mercy. [Life Application SB]