What does Revelation 3:19 mean?

In this verse Jesus summons the Laodiceans to mend their ways, to be fervent about repenting. They need to turn from their lethargy and restore their relationship with God. In spite of their wretched, pitiable, poor, blind, and naked condition, Jesus still loves them. He explains that He rebukes and disciplines those whom He loves.

Sometimes, God uses a hard trial or a physical affliction to discipline His erring children, but He exercises the discipline as a loving father. Hebrews 12:10 explains that fathers discipline their children for a short time as it seems best to them, but our heavenly Father disciplines us for our own good, that we may share His holiness. Further, although the discipline is painful, it doesn't last forever, and it produces righteousness in us (Hebrews 12:11). When we undergo discipline, we should not think God has abandoned us. Indeed, He is investing time in our spiritual education. His purpose is not to make us bitter but to make us better.