Romans Four - Fully Convinced

"He did not waver at the promise of God through unbelief, but was strengthened in faith, giving glory to God, and being fully convinced that what He had promised He was also able to perform. And therefore 'it was accounted to him for righteousness,'" Romans 4:20-22, NKJV. #FullyConvinced
God tells us that there is only one way to be declared righteous: to believe His instructions and to do them; therefore, in order to have eternal life in heaven, we must have faith in His Son Jesus, believe what He said and obey His commandments.
Exodus 4:28-31, 1 Samuel 3:10-21 and John 8:48-51.