2 Timothy 2:21 – “Therefore if anyone cleanses himself from the latter, he will be a vessel for honour, sanctified and useful for the Master, prepared for every good work.”
God can use anyone for fulfilling His purpose, if that person chooses to be useful to Him. God has blessed everyone with one talent or the other. Some have the gift of being a listener, encourager, writer, prayer warrior, or financial supporter for His ministry. Not everyone has the same talent or gift. God can use children as useful vessels for His work. Naaman the Syrian commander had leprosy. His wife’s captive servant girl was able to inform her mistress regarding the godly prophet Elisha. Naaman was cured of his leprosy after he came and listened to Elisha and washed himself seven times in river Jordan. He was completely healed (2 Kings 5). God used this young servant girl to inform Naaman that prophet Elisha could cure his leprosy. Also, God used a boy to provide five barley loaves and two fish for Jesus to multiply and feed five thousand (John 6:1-14). He was just an ordinary boy who came to hear Jesus speak. He could have not given his food to Jesus, but he became a useful vessel for Christ.
God can use pagan people such that His purpose is accomplished. When the Israelites sinned and failed to listen to God’s voice through the prophets like Isaiah and Jeremiah, God sent King Nebuchadnezzar, a pagan Babylonian king to take the Israelites as captives. God also used King Cyrus, the Persian king to help the exiles (Israelites who were taken captive by Nebuchadnezzar) and to rebuild the temple of God (Ezra 1).
Onesimus, the slave ran away from his believer master Philemon. But after he met Paul and heard the gospel, Onesimus became a believer and was useful to Paul (Philemon 1:11). Although Onesimus was a slave, he chose to follow Christ. God promises us that although you were dishonourable in God’s sight, He can cleanse you and make you a vessel of honour, sanctified and useful for accomplishing every good work for the Master (2 Timothy 2:21).