I recently read part of Ecclesiastes 3, and it occurred to me that a few verses have some resemblance to lines in "Time of the Season" (or, rather, the other way around, since Ecclesiastes is much older).
According to the Zombie Heaven liner notes (and I think he's also mentioned it in other interviews), Rod Argent came up with the phrase "the time of the season" when he misheard the line "If you look closer it's easy to trace" in Smokey Robinson & the Miracles' "Tracks of My Tears."
However, aside from that, it bears some resemblance to Ecclesiastes 3. The first two lines of "Time of the Season" are "It's the time of the season / When love runs high," and each verse ends with "It's the time of the season for loving." These seem to combine two verses from Ecclesiastes: "For everything there is a season, and a time for every matter under heaven" (Ecclesiastes 3:1) and "A time to love, and a time to hate" (Ecclesiastes 3:8a)(my italics in both quotations).
This section of Ecclesiastes is probably best known via the Byrds' version of Pete Seeger's "Turn! Turn! Turn! (To Everything There Is a Season)," and because Rod Argent said, "I love those early Byrds records" in this interview, I'm assuming he was familiar with the song (which was the title track of the Byrds' second album). Of course, since he was a chorister, he might have heard the Ecclesiastes text in church too.
I recently listened to the Mastertapes program again, and Argent mentions "Time of the Season" and "Hung up on a Dream" as the two songs on Odessey and Oracle that were most influenced by the 1967 Summer of Love. That's probably a more immediate influence than these verses from Ecclesiastes, but Ecclesiastes still may figure into it.
The "promised lands" part of the line "To take you in the sun to promised lands" also seems to be Biblical. I'm not sure if "promised land" occurs in the Bible (a quick look through my Bible's concordance didn't reveal anything), but the phrase describes the land that God promised to the children of Israel in Genesis and Exodus.
