2:14 murmurings. See I Corinthians 10:10. To “murmur” means to complain or grumble. “Disputing” means “arguing.” The Christian, in working out his inward salvation, is thus commanded never to complain or argue, but rather to accept the difficulties in life willingly, confident that the Lord is allowing them for good reason, as He is preparing him or her for the age to come.

2:16 word of life. Note John 6:63,68. The Scriptures constitute “the word of life” in written form. Jesus Christ is “the Word of life” in human form (I John 1:1). The Scriptures are also called “the word of His grace” (Acts 20:32), “the word of the kingdom” (Matthew 13:19), “the word of promise” (Romans 9:9), “the word of faith” (Romans 10:8), “the word of reconciliation” (II Corinthians 5:19), “the word of truth” (Ephesians 1:13), “the word of exhortation” (Hebrews 13:22), and other such marvelous titles.

2:16 day of Christ. On “the day of Christ,” see Philippians 1:6.