Moses, the humble servant of God, asked this question of the Israelites in Deuteronomy 10:12-22. What does the Lord require? Then he gave the answer.

Fear the Lord your God.

Walk in all His ways.

Love Him.

Serve the Lord your God with all your heart and with all your soul.

Keep the commandments and statutes of the Lord for your good.

Hold fast to Him and praise His name!

Sometimes, I think we overcomplicate faithfulness. The only way we can follow any of this is by the grace of God and the power of the Holy Spirit!