John 1:1 is the most important statement of the New Testament. On this truth hangs all other truths.
If Jesus was only a man, then no matter how good He was, His life could only provide a substitute for one other man. But since He was God, His life was worth more than every human life since creation. It was worth more than the sum total of the universe that He created.
Any compromise on this point will negate the work of Christ in our lives. Jesus was God manifest in the flesh (1 Timothy 3:16)! Yet this Almighty God came to live in a human body. He humbled Himself and took the form of a servant (Philippians 2:7).
Christ's humanity truly made Him one of us. He suffered the same temptations and pressures that we suffer (Hebrews 4:15). But it was His divinity that gave Him the power to save us to the most (Hebrews 7:25). We must never let His humanity blind us to the fact that Almighty God Himself became our friend (John 15:13-15). And we must never let His divinity blind us to the fact that He knows exactly how we feel and cares for us.
We need to let the Holy Spirit give us a true revelation of the deity and humanity of our Lord Jesus Christ throughout our lives.