The apostle Paul wrote to the Corinthians and urged them to "be steadfast, unmovable, always abounding in the work of the Lord, knowing that your labor is not in vain in the Lord" (1 Corinthians 15:58). That is a beautiful charge and one that every Christian should keep on their mind to keep focused in life and their duty for God. A true Christian is certainly steadfast and so is the Word of God and our hope (Hebrews 2:2-4; 6:19). Christians should strive to be steadfast in faith as Peter tells us in 1 Peter 5:9 when he uses the word "firm" which is another form of steadfastness. We should also be steadfast in our prayers, confidence, and in our worship to God (Romans 12:12; Hebrews 3:14; Acts 2:42). We realize as Christians that it is important to be steadfast in our faith in Jesus, but some may still wonder why. We are commanded in 1 Corinthians 15:58 to be steadfast - why? To be approved.
Paul tells the Romans "...patience, experience..." (Romans 5:4). When we are patient under the daily pressures, then we become a better Christian, one that has proven to be steadfast and as a result we become much stronger! One that is steadfast also produces joy (Colossians 2:5). We also need to be steadfast to resist the devil, to be holy, and not to be enticed (1 Peter 5:9; Colossians 1:22-23; 2 Peter 2:14). One can strengthen their steadfastness by enduring tribulation as Paul mentions in Romans 5:3-4. And of course the greatest reason to be steadfast in Jesus is because "we have become partakers of Christ if we hold the beginning of our confidence steadfast to the end" (Hebrews 3:14). Steadfastness reaps eternal benefits!