A key to why God chose tongues to be the sign of a person receiving His Spirit, His Holy Ghost, is found in James 3:2-8.

"For in many things we offend all. If any man offend not in word, the same is a perfect man, and able also to bridle the whole body." - James 3:2

"Behold, we put bits in the horses' mouths, that they may obey us; and we turn about their whole body." - James 3:3

"Behold also the ships, which though they be so great, and are driven of fierce winds, yet are they turned about with a very small helm, whithersoever the governor listeth." - James 3:4

"Even so the tongue is a little member, and boasteth great things. Behold, how great a matter a little fire kindleth!" - James 3:5

"And the tongue is a fire, a world of iniquity: so is the tongue among our members, that it defileth the whole body, and setteth on fire the course of nature; and it is set on fire of hell." - James 3:6

"For every kind of beasts, and of birds, and of serpents, and of things in the sea, is tamed, and hath been tamed of mankind:" - James 3:7

"But the tongue can no man tame; it is an unruly evil, full of deadly poison." - James 3:8

In these verses, the tongue is described as an “unruly evil” among the members of the body.

James declares, “the tongue can no man tame.”

No man can tame the tongue, but by a repentant heart and the desire to receive God’s Spirit, God can tame our tongue.

With words of praise, worship, and thanksgiving, Jesus will baptize a person with the Holy Ghost and they will speak in another tongue (language) as the Spirit of God speaks through them.

The tongue is the last thing to surrender to Jesus when we are allowing Him to fill us with His Spirit. When the Lord controls our tongue, it is a sign that we have given Him full control of our life!

Because the tongue is the last to surrender, it makes sense that tongues are the sign for being FILLED with the Holy Ghost.

"And they were all filled with the Holy Ghost, and began to speak with other tongues, as the Spirit gave them utterance." - Acts 2:4

"Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost.

“For the promise is unto you, and to your children, and to all that are afar off, even as many as the Lord our God shall call." - Acts 2:38-39 KJV