Hisway, you really need to take your own advise and study 1 Corinthians 14:
1 Corinthians 14:20-25
20 Brethren, do not be children in your thinking; yet in evil be babes, but in your thinking be mature. 21 In the Law it is written, "By men of strange tongues and by the lips of strangers I will speak to this people, and even so they will not listen to Me," says the Lord. 22 So then tongues are for a sign, not to those who believe, but to unbelievers; but prophecy is for a sign, not to unbelievers, but to those who believe. 23 If therefore the whole church should assemble together and all speak in tongues, and ungifted men or unbelievers enter, will they not say that you are mad? 24 But if all prophesy, and an unbeliever or an ungifted man enters, he is convicted by all, he is called to account by all; 25 the secrets of his heart are disclosed; and so he will fall on his face and worship God, declaring that God is certainly among you. NAS
On the day of Pentacost when the disciples spoke in tongues it was a sign to unbelievers; when Cornelius spoke in tongues it was a sign for Jews who failed to understand the gift of the gospel was also for the gentiles. Your whole tongues doctrine is a false teaching by a group who teaches a new gospel that denies Biblical truth.
The UPC teaches works/salvation and denies salvation by grace through faith in Jesus Christ.