2 Ne. 9:35; Alma 54:7; D&C 42:18, 79; 1 John 3:15; 5:16-17; Teachings of the Prophet Joseph Smith, pp. 188-189, 339; Mormon Doctrine, McConkie, p. 520; Alma, Testimony of the Word, ed. by Nyman & Tate, pp. 161-163; Doctrinal New Testament Commentary, McConkie, 3:584; Encyclopedia of Mormonism, 4:1443; New Witness for the Articles of Faith, McConkie, p. 231; refer in this text to Alma 24:9-13
“…if a member of our Church, having received the light of the Holy Spirit, commits this capital crime [murder], he will not receive forgiveness in this world nor in the world to come. The revelations of God to the Church abound in commandments forbidding us to shed blood.” (Wilford Woodruff)
[The Church defines murder as] “The deliberate and unjustified taking of human life.” (General Handbook 10-13)