“Praise awaits you, our God, in Zion; to you, our vows will be fulfilled.
You who answer prayer,  to you, all people will come.” Psalm 65:12(NIV)
To You, our vows will be performed.
Vows made to You must be kept.
Remember. Remember all your vows.
How many promises have you made and forgotten.?
Especially the most common phrase:
“I will be praying for you.”
Do you really pray for all the people you have made such statements to?
“When you vow a vow or make a pledge to God, do not put off paying it; for God has no pleasure in fools (those who witlessly mock Him). Pay what you vow. It is better that you should not vow than that you should vow and not pay.” 
Ecclesiastes 5:4-5 (AMPC)
God is Faithfull to forgive as you confess and repent from all that you have promised Him before.
He will surely guide you on the next steps of what to do.
David made a promise to Jonathan, and many events happened after that.
However, the day he remembered, he acted. (2 Samuel 9)
“I come before your presence with my sacrifice. I’ll give you all that I’ve promised everything I have. When I was overcome in my anguish, I promised to give you my sacrifice. Here it is! All that I said I would offer you is yours.”  Psalm 66:13-14 (TPT)
God always keeps HIS side of the bargain.
“God is not like people. He tells no lies. He is not like humans. He doesn’t change his mind. When he says something, he does it. When he makes a promise, he keeps it.” Numbers 23:19 (GW)
As you reflect today, remember those vows you have made to God.
Go and do the needful.