Evangelical Christians maintain that salvation is “by grace through faith”…
Evangelical Christians maintain that salvation is “by grace through faith” in Jesus Christ alone (see Rom. 4:4-5; Eph. 2:8-9; Titus 3:5). Baptism is not essential to one’s reception of salvation. It is a symbol of one’s identification with the life, death, and resurrection of Jesus Christ. Acts 2:38 must be read in context and in light of Jesus’ clear command in Matthew 28:19.
Speaking in tongues (glossolalia), like all other spiritual gifts, is distributed sovereignly by the Holy Spirit to those He wills for the equipping and edification of the whole body of Christ (see 1 Cor. 12-14). There is no indication that it, or any other spiritual gift, is required to receive God’s gift of salvation by grace or to be filled with His Holy Spirit (see Eph. 5:18).
Oneness movements’ emphases on personal holiness and healthy lifestyles are commendable. Nevertheless, the requirements for outward adherence to a strict moral code in order to maintain salvation inevitably leads to legalism and a lack of assurance of eternal life.
No amount of good works, moral living, or church membership guarantees salvation. Salvation is entirely based on grace through faith in Christ. Good works and holy living are the natural responses of salvation already received – not its cause (see Eph. 2:10). Salvation is eternally assured for those who have accepted Christ as personal Lord and Savior (see John 1:12; 5:24; 1 John 5:13).
Mark 16:18 is part of a disputed portion of Mark’s text. Regardless, handling snakes or drinking poison is a misuse of that Scripture and has resulted in the deaths of many practitioners.