Trees of life: They are powerful, attractive spiritual symbols
The oak tree was also prominent in the Old Testament, with idols being buried under such a tree (Genesis 35:4) and later an angel appearing to Gideon under an oak tree (Judges 6:11-19). During Jesus Christ's mortal ministry, he used trees to illustrate many soul-searching parables and teachings. For example, "a good tree bringeth not forth corrupt fruit; neither doth a corrupt tree bring forth good fruit" (Luke 6:43). Ref. Source 9