How do we know that Christ is the apple tree mentioned in the Song of Solomon?

In the Song of Solomon, the apple tree represents Christ, illustrating His unique and singular role among humanity. Just as the apple tree provides shade and sweet fruit, Christ offers spiritual rest and nourishment for believers. The imagery of sitting under the apple tree's shadow highlights the comfort and safety found in Christ's presence, as He invites weary souls to find rest in Him. The exclusivity of this tree further signifies that there is only one pathway to salvation, embodying the essential truth of the gospel that in Him alone can believers find security and sustenance for their spiritual journey.