Set me as a seal upon thy heart, As a seal upon thine arm: For love is strong as death; Jealousy is cruel as Sheol: The flashes thereof are flashes of fire, Flames of Jah. Many waters cannot quench love, Neither do the floods drown it: Even if a man gave all the substance of his house for love, It would utterly be contemned.
Song of Solomon 8:4 I charge you, daughters of Jerusalem, Why should ye stir up, why awake [my] love, till he please?
Song of Solomon 8:5 Who is this that cometh up from the wilderness, Leaning upon her beloved? I awoke thee under the apple-tree: There thy mother brought thee forth; There she brought thee forth [that] bore thee.
Song of Solomon 8:6 Set me as a seal upon thy heart, As a seal upon thine arm: For love is strong as death; Jealousy is cruel as Sheol: The flashes thereof are flashes of fire, Flames of Jah.
Song of Solomon 8:7 Many waters cannot quench love, Neither do the floods drown it: Even if a man gave all the substance of his house for love, It would utterly be contemned.
Song of Solomon 8:8 We have a little sister, And she hath no breasts: What shall we do for our sister In the day when she shall be spoken for?
Song of Solomon 8:9 If she be a wall, We will build upon her a turret of silver; And if she be a door, We will enclose her with boards of cedar.
The verse centers on "seal", "upon", "heart", "thine", "love", and "strong". It is saying that the verse draws attention to "seal" and "upon", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 5's "Who is this that cometh up from..." into verse 8's "We have a little sister And she...", so "seal" and "upon" belong inside that flow. In Song of Solomon context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "seal" and "upon" with trust shaped by these words, not by a vague optimism outside the passage.