What does it mean to be faithful?

A sermon I did on 2 Timothy 2:1-13

Link here

Managed to fit in this wonderful quote from Spurgeon:
“Eternal Faithfulness Unaffected by Human Unbelief”:

“Christ sits at the receipt of sinners waiting for them to mention their wants. He is watching for you. I tell you again that he cannot reject you: that would be to alter his whole character and un-Christ himself. To spurn a coming sinner would un-Jesus him, and make him to be somebody else, and not himself any longer. “He cannot deny himself.” Go and try him: go and try him. I wish some trembling soul would at this moment go and cast himself upon Christ, and then report to us the re-suit. Come, poor quivering seekers, sing in your heart, unbelieving as you are. Oh, but if you were to perish at his feet, you would be the first that ever did so out of all those who have ever come to him; and that first man has never been seen yet. Go and try my Lord and see for yourselves. Well now, you Christian people, I want you to come also. If you believe your Lord he will be faithful to you. Suppose it is a time of trouble with you: he will be faithful to you; go and cast your burden upon him. Suppose at this time you, are much exercised with spiritual distress: go to the-Lord as you did at first, as poor, guilty, rebellious sinners, and cast yourself upon him, and you will find him faithful. “He cannot deny himself.” If my Lord were not kind to me to-night when I go to him with my burden I should think that I had knocked at the wrong door; because the Lord has been so good and so faithful to me hitherto that it would take my breath away if I found him changed. Oh, how good, how exceeding good is my Lord! I could sing that with all my heart, and I hope many of you could earnestly join with me. So how surprised you would be if I were to meet anything but love from my dear Lord after all these years of tenderness, There is no fear of it, for “he cannot deny himself.”