Ehipassiko: Come and see
A quality of the Dhamma, that it can only invite. The call rings out twice, and both times it is one word, come, with no argument attached and no threat behind it. Nobody is dragged to the river; the door is left standing open and the walking is yours to do.
Kalyāṇamittatā: Good friendship
Companionship that carries someone toward release. Whoever hears is given nothing to keep, only the same word to hand on, so the invitation travels mouth to mouth like a lamp lit from a lamp. The Buddha told Ānanda this was the whole of the holy life: friends who pass the call along.
Taṇhā: Thirst
Craving, whose Pali name is literally thirst. Salt water keeps a sailor drinking and leaves them drier, and that is how most wanting runs. Being thirsty is the good news at this gate, since thirst is the one condition that brings a person to the water's edge at all.
Chanda: Wholesome desire
The wish to act, which can lean toward the good. Desiring, and then taking, is what closes the last few steps to the water: the same energy that usually ties a person to the world, turned around and used to walk out of it. Pali sorts this from thirst by where it ends, and a wanting that ends in the ending of wanting is welcome here.
Amata: The deathless
The unconditioned, past birth and dying. Water of life belongs to the old picture of a spring that never runs dry, a drink that does not end the way every other drink ends. Fresh from his awakening the Buddha said the doors to the deathless stand open, the same gesture being made in these closing lines.
Dhammadāna: The gift of the Dhamma
Teaching handed over as a gift. Freely carries the weight of the whole line: no coin, no test of worth at the gate, the water simply drawn and given. The gift of Dhamma surpasses all gifts, and this is its mark, that nothing is charged and nothing is kept back.