Zechariah 4:3

4:3 There are also two olive trees beside it, one on the right of the receptacle and the other on the left.” ¹ 

Zechariah 4:11

4:11 Next I asked the messenger, “What are these two olive trees on the right and the left of the menorah?”

[4:3]  ¹ sn The vision apparently describes two olive trees providing olive oil by pipes to a large basin atop the menorah. From this basin two pipes extend to each of the seven lamps of the menorah, for a total of fourteen pipes in all. See vv. 11-12.