He who believes in the Son has eternal life, but he who does not obey the Son will not see life, but the wrath of God abides on him. - John 3:36
Here we see belief and obedience together being required. He who believes has eternal life. He who does not obey will not see life. Together these statements support the notion that true faith is equivalent to "trusting obedience". In other words belief requires obedience or it isn't truly belief.