Why is striving for salvation important for Christians?

Striving for salvation is crucial as it emphasizes our active role in responding to God's grace. Jesus commands His followers to 'strive to enter in at the strait gate,' indicating that salvation requires earnest effort and deliberate pursuit. This striving acknowledges the seriousness of our spiritual condition and the reality that many do not enter the kingdom of God. The juxtaposition of the 'last' and the 'first' serves as a reminder that earthly status does not guarantee a place in Heaven, and thus, Christians must engage actively in their faith, utilizing the means of grace provided by God.