In Leviticus 25 God establishes that the people should give the land a rest every seven years. In that year they are not to sow seed or prune the vineyards. They may eat of whatever the land produces by itself.
Every fifty years God establishes the year of jubilee. It is again a year of Sabbath for the fields. It is also a time when any property that has been purchased is restored to its former owner. This is to remind the people that they are strangers in the land. This is a time of redemption and reconciliation. It should be noted that the year of jubilee has never been observed.
Leviticus 26 speaks of the faithfulness of the people of Israel and God’s faithfulness to them. If they keep the laws He has set out God will bless them generously. If however they disobey, God promises to punish them severely. If they confess their sin, are humbled and make amends for their sin God promises to keep the covenant He made with Abraham, Isaac and Jacob.
Psalm 25 speaks of God’s steadfast love and faithfulness. He is faithful to teach the humble His ways and to lead them in righteousness. David humbly asks God’s forgiveness for himself and for Israel.