As a member of the Seventh Day Adventist, we believe in sola scritura, Holy Bible. Jesus said "if you love me keep my commandments". We obey the law of God written by his very own finger. We keep all his commandments not some, but ALL.  We do not agree with others where they compromised themselves by obeying "the traditions of men". Jesus was 30 years old when he got baptised. In our church most of the younger one are usually  15 to 16 years old. We believe that a baby does not know good from wrong. When babies die, if they are not baptised do not go anywhere. God in his infinite mercy and love is not cruel by throwing un-baptised babies to burn forever. The Bible says that 'The dead not know anything" all references to death is "sleep". Jesus when asked by the "good"  thief told him "verily I say unto you to-day, thou shalt be with me in paradise" Jesus was dead and buried for 3 days and did not ascent to heaven for several days later, so there is no way that Jesus could have gone to heaven and taken the "good" thieve with him. Having said all this, Mary and Joseph were Jesus parents and presented Jesus in the Synagogue as a child. You may present you child to God in church.