Act 1, Scene 2
Sergeant: Except they meant to bathe in reeking wounds,
Or memorise another Golgotha (1.2.45)
Commentary: A reference to Christ's death upon Mount Calvary, as reported in Matthew 27.33: "And when they were come unto a place called Golgotha, that is to say, a place of a skull." According to John 29.34, a Roman soldier pierced Christ's side as he hanged from the cross. Shakespeare's Sergeant tells King Duncan that the army he has just encountered is as violent and remorseless as the soldiers who put Christ to death.
Ross: God save the king! (1.2.48)
Commentary: Although Shakespeare would have been familiar with this now commonplace salutation simply by living under monarchical rule, the saying originated in the Bible. In 1 Samuel 10.24 the people greet King Saul: "And all the people shouted, and said, God save the king."
Act 1, Scene 3
First Witch: All hail, Macbeth! hail to thee, thane of Glamis! (1.3.51)
Commentary: "All hail" is a common greeting in the New Testament, but one use of the phrase stands out in particular when discussing this passage from Macbeth. In Matthew 26.49, Judas prepares to betray Jesus to the Sanhedrin and Roman soldiers. His plan is to identify Jesus by greeting him with a kiss so that the soldiers will know which man to arrest. Judas approaches Jesus, saying, "Hail Master." The Witches greet Macbeth in a similar fashion, and, as Judas betrayed Jesus, so do the Witches betray Macbeth.
Banquo: If you can look into the seeds of time,
And say which grain will grow and which will not,
Speak then to me (1.3.60)
Commentary: Banquo, unconvinced that the Witches can forsee the future, makes reference to Ecclesiastes 11.6: "In the morning sow thy seed, and in the evening withhold not thine hand: for thou knowest not whether shall prosper, either this or that, or whether they both shall be alike good."
Banquo: And oftentimes, to win us to our harm,
The instruments of darkness