First love is the purest kind of spiritual love we as humans can demonstrate. It is a love that truly shows one's heart is completely given to God.
All the signs point to Christ's imminent return, yet the Bible warns us not to let down. Hebrews 10 exhorts us to strive to please God and finish our course.
Hebrews warns us to resist the pernicious pulls of the world and the flesh that cause us to spiritually drift, particularly pride and double-mindedness.
Hebrews 11 provides examples to bolster faith. The faith described is not blind, but is carefully developed from systematic analysis of available evidence.
Living faith has its roots in fervently, diligently seeking God and His righteousness with intense desire (like a passionate lover) through habitual prayer.
It is far easier to conform to the world than to Christ. We must yield to God to renew our minds, living in the spirit rather than in the flesh.