There are plenty of Scripture examples to establish the truth that speaking in tongues is the initial evidence of receiving the Gift of the Holy Spirit.
1. Does confirmation of the Gospel still need to take place?Contrary to this, the Bible teaches that the sign gifts were for authenticating the revelation of the New Covenant, and implies that subsequent generations did not need it or have it - Heb. 2:3-4 "...which at the first began to be spoken by the Lord, and was confirmed to us by those who heard [Him], God also bearing witness both with signs and wonders, with various miracles, and gifts of the Holy Spirit..."
2. Exactly where in the Hebrews p***ages say this confirming process would ever stop?
Hmmmmm....In addition, none of the antenicene fathers wrote anything on this subject as if it was something ongoing throughout the generations. In fact, the tongues movement is a fairly recent 20th century movement, which is a red-flag indication that it is quite possibly a cult movement.
1. The church fathers didn't write about a lot of things.
2. So, is it a red flag indicator that the teaching of "Justification by Faith" didn't get taught until the 1500s? Does that mean it is a false doctrine then?
3. So, all denominations that started 1500 years or later after the early church was around is "possibly a cult movement?" That is what you are inferring in my opinion. You may want to rethink this argument!
Respectfully
Adelphos