Should
Vine's Expository Dictionary of NT Words [1]
"to be about to" (for the significance of which see SHALL), e.g., Mark 10:32 , RV, "were to;" Luke 19:11 , RV, "was to;" "should" in Luke 22:23; 24:21; John 6:71; 7:39 , RV, "were to;" John 11:51; 12:4,33; 18:32; Acts 11:28; 23:27 , RV, "was about (to be slain);" 1—Thessalonians 3:4 , RV, "are to;" Revelation 6:11 . See About , B.
"it needs, it should," e.g., Matthew 18:33; Acts 27:21 : see Must.
1—Corinthians 9:10
King James Dictionary [2]
SHOULD. shood. The preterit of shall, but now used as an auxiliary verb, either in the past time or conditional present. "He should have paid the debt at the time the note became due." Should here denotes past time. "I should ride to town this day if the weather would permit." Here should expresses present or future time conditionally. In the second and third persons, it denotes obligation or duty, as in the first example above.
1. I should go. When should in this person is uttered without emphasis, it declares simply that an event would take place, on some condition or under circumstances.
But when expressed with emphasis, should in this person denotes obligation, duty or determination.
2. Thou shouldst go.
Webster's Dictionary [3]
(1): ( imp.) of Shall
(2): ( imp.) Used as an auxiliary verb, to express a conditional or contingent act or state, or as a supposition of an actual fact; also, to express moral obligation (see Shall); e. g.: they should have come last week; if I should go; I should think you could go.
