| 1. | serious in intention, purpose, or effort; sincerely zealous: an earnest worker. |
| 2. | showing depth and sincerity of feeling: earnest words; an earnest entreaty. |
| 3. | seriously important; demanding or receiving serious attention. |
| 4. | full seriousness, as of intention or purpose: to speak in earnest. |

| 1. | a portion of something, given or done in advance as a pledge of the remainder. |
| 2. | Law. earnest money. |
| 3. | anything that gives pledge, promise, or indication of what is to follow. |
n < Sem (cf. Heb ʿērābhōn security, pledge). Cf. arras 2 
ear·nest 1 (ûr'nĭst) adj.
[Middle English ernest, from Old English eornoste; see er-1 in Indo-European roots.] ear'nest·ly adv., ear'nest·ness n. |
Earnest
The Spirit is the earnest of the believer's destined inheritance (2 Cor. 1:22; 5:5; Eph. 1:14). The word thus rendered is the same as that rendered "pledge" in Gen. 38:17-20; "indeed, the Hebrew word has simply passed into the Greek and Latin languages, probably through commercial dealings with the Phoenicians, the great trading people of ancient days. Originally it meant no more than a pledge; but in common usage it came to denote that particular kind of pledge which is a part of the full price of an article paid in advance; and as it is joined with the figure of a seal when applied to the Spirit, it seems to be used by Paul in this specific sense." The Spirit's gracious presence and working in believers is a foretaste to them of the blessedness of heaven. God is graciously pleased to give not only pledges but foretastes of future blessedness.