The Bible clearly teaches that there are ways of behaving that finds favor with God, that is He is impressed, pleased, and rewards or blesses that behavior.
There are many who teach that God because of His mercy and Grace treats us all the same, and doesn’t have favorites. That is about the most unmotivating teaching that I can think of.
Genesis 6:8 But Noah found favor in the eyes of the Lord.
Luke 1:30 The angel said to her, “Do not be afraid, Mary; for you have found favor with God.
Acts 7:46 David found favor in God’s sight, and asked that he might find a dwelling place for the God of Jacob.
1 Peter 2:19 For this finds favor, if for the sake of conscience toward God a person bears up under sorrows when suffering unjustly.
1 Peter 2:20 For what credit is there if, when you sin and are harshly treated, you endure it with patience? But if when you do what is right and suffer for it you patiently endure it, this finds favor with God.
Psalms 5:12 For it is You who blesses the righteous man, O Lord, You surround him with favor as with a shield.
Psalms 69:30-31 I will praise the name of God with song and magnify Him with thanksgiving. And it will please the Lord better than an ox or a young bull with horns and hoofs.
Proverbs 16:7 When a man’s ways are pleasing to the Lord, He makes even his enemies to be at peace with him.
Ephesians 5:10 trying to learn what is pleasing to the Lord.
Colossians 1:10 so that you will walk in a manner worthy of the Lord, to please Him in all respects, bearing fruit in every good work and increasing in the knowledge of God;
1 Thessalonians 4:1 Finally then, brethren, we request and exhort you in the Lord Jesus, that as you received from us instruction as to how you ought to walk and please God (just as you actually do walk), that you excel still more.
So what are the rewards from God when we please Him with our life and find favor with Him? I believe it is an inner sense of joy, fulfillment, and significance that comes from God. When Jesus came up out of the water when He was baptized, the Father spoke from heaven and said, “this is my beloved Son in whom I am well pleased.” We won’t hear an audible voice from God when He is pleased with us, but I do believe we will sense His pleasure in our heart.