2016 Wesleyan Discipline:6725:c

(c) Worship and language. The Wesleyan Church believes in the miraculous use of languages and the interpretation of languages in its biblical and historical setting. But it is contrary to the Word of God to teach that speaking in an unknown tongue or the gift of tongues is the evidence of the baptism of the Holy Spirit or of that entire sanctification which the baptism accomplishes; therefore, only a language readily understood by the congregation is to be used in public worship. The Wesleyan Church believes that the use of an ecstatic prayer language has no clear scriptural sanction, or any pattern of established historical usage in the Church; therefore, the use of such a prayer language shall not be promoted among us.