“For the word of God is quick, and powerful, and sharper than any two-edged sword,piercing even to the dividing asunder of soul and spirit.” Heb. 4:12
The Word of God is not merely the Bible – the Bible is the written Word. But Jesus Christ is the Living Word. Of course, there is only ONE true word, and so the Living Word will always agree completely with the written Word. But the point is this: God is speaking to us today IN HIS SON; He is speaking Son-wise. (Heb. 1:1) God is
revealing Christ TO us and IN us. This is, after all, the why His Spirit was given.
Jesus Christ in us IS the testimony of Jesus Christ. He is God’s Living Word governing us to the point where we are living evidence or testimony of the Risen Christ. People ask for evidence that Jesus Christ exists, and mock when God provides none that satisfies them. But God is not concerned. Jesus Christ IS the evidence of God:
” Since we believe human testimony, surely we can believe the greater testimony that comes from God. And God has testified about his Son. 10 All who believe in the Son of God know in their hearts that this testimony is true. Those who don’t believe this are actually calling God a liar because they don’t believe what God has testified about his Son.11 And this is what God has testified: He has given us eternal life, and this life is in his Son.” 1 John 5:9-11
And when Christ comes to dwell in us, His very presence becomes a living testimony to God Himself in us, and through us. This is what it means to become a witness for Christ. We have the evidence in us, and He is seen by others.