Preach the gospel at all times. Use words if necessary?

The great commission is a clear and direct command from God. We are to preach the gospel of Christ to all the earth, and make disciples of all men. Every Christian is an evangelist, if they are a Christian. No Christian can in good conscience sit idly by while people walk out of time into eternity without Christ. It is the most unloving, selfish thing a person can do. St. Francis was falsely attributed with the saying, “Preach the gospel at all times. Use words if necessary.” This concept is no where to be found in the Bible. I guess if you don’t care that people are going to die and suffer in hell for all eternity you can just be a nice person, and hope that the people in your life convert before they get hit by a buss, and end up in hell, but why would you when eternity is on the line? Simply being nice to people does not give them the gospel. The good news of Christ is the penal substitutiary atonement that He accomplished on the cross of His suffering. He who knew no sin, became sin, for us. He was imputed with sin that was not His, and suffered for it. He paid the price that we could not pay, and makes the repentant sinner just to God by faith. His righteousness is imputed to the humbled sinner. They are saved by grace through faith. “For by grace you have been saved through faith; and that not of yourselves, it is the gift of God; not as a result of works, so that no one may boast.” Eph 2:8-9. If any of you have not repented of your sins, and trusted in Christ alone for your salvation, do not wait, or put it off. “And working together with Him, we also urge you not to receive the grace of God in vain—
2for He says,
“AT THE ACCEPTABLE TIME I LISTENED TO YOU,
AND ON THE DAY OF SALVATION I HELPED YOU.”
Behold, now is “THE ACCEPTABLE TIME,” behold, now is “THE DAY OF SALVATION”—” 2 Cor 6:1-2.

Romans 10:14-15 (NASB)  How then will they call on Him in whom they have not believed? How will they believe in Him whom they have not heard? And how will they hear without a preacher? How will they preach unless they are sent? Just as it is written, “How beautiful are the feet of those who  bring good news of good things!”