One reason to undergo baptism is that Jesus commissioned his followers to “make disciples..., baptizing them. ”
أَحَدُ ٱلْأَسْبَابِ لِلْمَعْمُودِيَّةِ هُوَ أَنَّ يَسُوعَ فَوَّضَ إِلَى أَتْبَاعِهِ أَنْ ‹ يُتَلْمِذُوا أُنَاسًا وَيُعَمِّدُوهُمْ › .‏