Rig Ved Mandal 1, Shukt 1, Mantr 1

अग्निमीले पुरोहितम् यगस्य देवम् ऋत्विजम्। होतारं रत्नधातमम् ।।१।।

हम अग्निदेव की स्तुति करते हैं। अग्निदेव, यज्ञ (श्रेस्ठतम पारमार्थिक कर्म) के पुरोहित (आगे बढ़ाने वाले), देव (अनुदान देने वाले), होता (देवों का आह्वान करने वाले), ऋत्विज् (समयानुकूल कार्यों, स्तिथियों और ऋतुओं का संपादन करने वाले) और याजकों को रत्नों (यज्ञ के लाभ) से विभूषित करते हैं।

अग्निमिले - it is derived from अंग which indicates a strong and luminous movement. इले indicates an act of adoration, aspiration.
अग्नि in Rig Veda stands for cosmic will power united with wisdom. Human will power is a feeble projection of this power. In the journey the selfless actions (यज्ञ) towards attaining wisdom, this cosmic will power is invoked to collaborate with human will. This invocation is done through love and adoration towards अग्निदेव

रत्नधतामम् -
    रत्न - आनंद, ecstacy, happiness, realization. Only much later, this word started refering to jewels and weslth. In Veda this word has nothing to do with jewels and material wealth.
    रत्नधा - रत्नों को धारण करने वाले।
    तम् - उत्तम, excellent.

ऋतविजम् -
     ऋत्विक - सत्य और आनंद। truth and ecstacy. One who has the ecstacy of the truth. Also ऋतु means season - the order of truth - its arrangement of time and circumstances. All the work towards perfection (यज्ञ) is sacrificed by the अग्नि according to the law, order and seadons. Note all actions are viewed as sacrifical.

Inferred out of - Rig Veda Samhita - mandal 1, by R L Kadhyap.