I must.

Mark 1:14, 15, 38, 39
After the arrest of John, Jesus went into Galilee and proclaimed the gospel of God. . . .

John 9:4
While it is daytime, we must do the works of Him who sent Me. Night is coming, when no one can work.

Acts 10:38
how God anointed Jesus of Nazareth with the Holy Spirit and with power, and how Jesus went around doing good and healing all who were oppressed by the devil, because God was with Him.

2 Timothy 4:2
Preach the word; be prepared in season and out of season; reprove, rebuke, and encourage with every form of patient instruction.

therefore.

Isaiah 42:1-4
Here is My Servant, whom I uphold, My Chosen One, in whom My soul delights. I will put My Spirit on Him, and He will bring justice to the nations. . . .

Isaiah 48:16
Come near to Me and listen to this: "From the beginning I have not spoken in secret; from the time it took place, I was there." And now the Lord GOD has sent me, accompanied by His Spirit.

Isaiah 61:1-3
The Spirit of the Lord GOD is on Me, because the LORD has anointed Me to preach good news to the poor. He has sent Me to bind up the brokenhearted, to proclaim liberty to the captives and release from darkness to the prisoners, . . .

John 6:38-40
For I have come down from heaven, not to do My own will, but to do the will of Him who sent Me. . . .

John 20:21
Again Jesus said to them, "Peace be with you. As the Father has sent Me, so also I am sending you."