Acts 4;12:
"And there is salvation in no one else, for there is no other name under heaven given among men by which we must be saved."
Matthew 28;19,20:
"Go therefore and make disciples of all nations, baptizing them in the name of the FATHER and of the SON and of the HOLY SPIRIT, teaching them to observe all that I have commanded you. .................................................................."
Were the word 'baptize' mentioned in Acts 4;12?
Apostle Peter in Acts chapter 4, is talking to the ignorant Jews about the Savior who they have Him crucified, who is now already exalted and seated in Heaven. Peter is testifying to them that there is no other name by which men can be saved.
In other words there is only Salvation to those who believe and come through our LORD JESUS CHRIST as the Gospels testify and through none other ever. There is only 'one way in' for all mankind to be saved.
Once anyone have come to know, understand and believe, in all of these teachings according to, as also in the written Gospels and by the Help of the HOLY SPIRIT, that which also mentions, include water ceremony, testimony of one who is accepting the New Covenant instructions order and gladly receive them as a gift and that was made by GOD with them, as written; 'by Grace through faith'. A conduct of one's testimony done in faith, who believe and claim in front of witnesses who are in the same faith, that one is making a decision to bury the 'old person', who is upon Gospel's revelation, dead in sin, and then now he or she come out a 'new person' who is rooted to CHRIST's teachings and instructions. And further from today onwards live for LORD JESUS CHRIST, being a 'living New Testament testimony vessel' testifying to the world, as one 'abiding' in all of them that is written in the Holy Bible, for others who are lost and dead in sin may witness the same Grace and Truth brought by JESUS of Nazareth.
And that's when finally he and she is fully equipped and fully trained individually according to their calling through the teachings and revelations of the New Covenant, that they have been truly baptized in the name of the Holy Trinity, who was from the beginning at work in their lives that led them to salvation. And all of them till today is done in the name and through the name of the FATHER and of the SON and of the HOLY SPIRIT.
Please child, do not content in your youth being babes in CHRIST, using the Holy Scripture without sound doctrine knowledge understanding all of them as 'one', as established more than two thousand years ago and later was written for us to witness and testify even today to the world, as also they are;
" ...................... the same yesterday, today and forever, Amen."
For you have so much to learn and further be baptized in the name of the of the FATHER and of the SON and of the HOLY SPIRIT, through the Holy Bible and revelation and understanding of Kingdom Spiritual knowledge. Believers cannot take out of context one part of the Scripture in order to nullify the other part. We all need the Help of the HOLY SPIRIT, to teach and sum them all up for you and me and others, in order to understand a complete, completed doctrine of the Kingdom of GOD. They are 'one' Spiritual knowledge, through 'all inspired Scripture' as 'unites' all in 'one' testimony without contradictions and divisions.
May the Good GOD, the FATHER of our LORD JESUS CHRIST keep you from deception and from harms way of temptation and protect you from evil.