For you, God, have heard my vows;
Psalms 61:5 (NIV)
you have given me the heritage of those who fear your name.
When we make commitments to God he really does hear us. He values them and remembers them. Whether it is a big or small commitment, if we follow through then he will bless us for it.
God will give us the heritage reserved for those who fear and love him. Is not the inheritance that God gives greater than any worldly blessing? Is it not true that:
All things are yours, whether Paul or Apollos or Cephas or the world or life or death or the present or the future —all are yours.
1 Corinthians 3:21-22 (NIV)
This is our heritage, that everything that is from God is ours. We are blessed with every spiritual blessing in heaven (Eph. 1:3). Moreover, he will reward individual believers for the good they have done (see, for example, 2 Cor. 5:10).
So we can be encouraged that God hears our vows and he is pleased with them and will honor us accordingly.