Apologetics is important and necessary for Christians and the Church. The Bible commands Christians to do apologetics in 1 Peter 3:15 and gives many examples of the apostles doing apologetics. Similarly, the Bible also says to love God with all your mind (Mark 12:30), to take every thought captive to the obedience of Christ (2 Corinthians 10:4-5), and to test everything (1 Thessalonians 5:21 and 1 John 4:1). Apologetics can help you do all these things. On the other hand, the Bible warns us that the heart is deceitful above all (Jeremiah 17:9), that we should not trust our own heart (Proverbs 28:26), that we can be hardened by the deceitfulness of sin (Hebrews 3:13), that we are in a battle with spiritual powers of wickedness (Ephesians 6:12), that we should be sober-minded and vigilant because the devil is seeking to devour us like a lion (1 Peter 5:8), that there are none who are righteous nor seek after God (Romans 3:10-11 from Psalm 14:1-2 and 53:1-2), that we should be on guard against deceitful human teachings (Colossians 2:8), and that we should watch out for false prophets who may even fool the elect with great signs (Matthew 7:15 and 24:24). Apologetics is the answer to help us think clearly and not fall victim to a deceitful heart that is easily misled by fleeting emotions.
Practically, apologetics can help those in and out of the Church. As many as 70% of youths are leaving the Church primarily due to reasons related to apologetics (see the book You Lost Me). People, especially the younger generations, have difficult questions about faith that are not currently getting answered in a fulfilling way. As a result, people are opting for science and reason instead of dogma and wish fulfillment. Apologetics answers those questions and integrates science, reason, and faith in a way that is fulfilling, consistent, and comprehensive. Apologetics is the best solution to the problem of people leaving the Church.
Finally, apologetics is extremely useful for evangelism. People don’t share their faith because they lack confidence and fear that they won’t have answers. Meanwhile, non-believers mock religious belief for being anti-intellectual and opposed to reason. Apologetics can give believers confidence to share their faith, give them the answers to tough questions that people ask, and remove intellectual barriers that prevent people from following Jesus.