I have declared... – Psalm 40:10

Jesus was constantly testifying to the gospel of God, the gospel of His righteousness and of His grace. From the first moment when He, being full of the Holy Ghost, began to preach the gospel, until the day when He was taken up into heaven, while He blessed His disciples, He was instant in season and out of season. There were no wasted moments of time, no neglected opportunities, no talents held in reserve. “I must work,” was His motto. The zeal of God’s house consumed Him. It was His meat and His drink to do the will of Him that sent Him. Mark ye how He concentrated every attribute of His nature, every faculty of His mind, and every power of His body in the one work He had undertaken-to do His Father’s will? He seems all His life through to have challenged the enquiry, “Wist ye not that I must be about My Father’s business?” He was continually preaching the gospel. “Never a man spake as this Man,” may apply to the quantity as well as the quality of His utterances…He could speak anywhere-even along the crowded thoroughfare, where the multitudes thronged Him. He went down the lowest streets, and from the poorest beggars He didn’t turn aside. He was not thwarted by the sneers, and sarcasms, and subtle questioning of the Pharisees and Sadducees. One thought possessed Him, and He persistently wrought it out. His life-sermon was so thorough that nothing of earthly splendor could allure or distract Him or break the thread. He was always and everywhere either pleading with God for men, or else pleading with men for God…”I have preached righteousness in the great congregation: lo, I have not refrained My lips, O Lord, Thou knowest. I have not hid Thy righteousness within My heart; I have declared Thy faithfulness and Thy salvation: I have not concealed Thy lovingkindness, and Thy truth from the great congregation.” He was the great Witness for God, the great Testifier, who went proclaiming everywhere the kingdom of God, and the good tidings of salvation to man. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0977.cfm