If you wanted to give someone confidence and joy, would you bring up antichrists? Sounds apocalyptic, not assuring.
Part of the problem, no doubt, has to do with our diseased imaginations of "antichrists," something along the lines of a diabolical character in a horror movie. But part of the problem, as well, may have to do with our assumption that confidence and joy come in the absence of opposition and danger.
If that is what we assume, we won't have much confidence and joy in our Christian lives. God knows this, so he doesn't try to hide from us the reality of the world in which we live. We live in the last hour with many antichrists. But God also reveals to us his perfect provision for just such an occasion. You can have confidence and joy in knowing that you have the true God and eternal life.
Come, Christians, Join to Sing (67)
Eternal Spirit! Praise We Bring (207)
Come, Holy Ghost, Our God and Lord (209)
Our Great Savior (434)
Old Testament: Numbers 27:1-23; Psalm 113
New Testament: John 10:1-21
Confidence in the Last Hour - 1 John 2:18-27