Abraham believed in the LORD; and he counted it to him for righteousness.

Abraham  believed in the LORD; and he counted it to him for righteousness.

Gen 15:3-6And Abram said, Behold, to me thou hast given no seed: and, lo, one born in my house is mine heir.

మరియు అబ్రాముఇదిగో నీవు నాకు సంతానమియ్యలేదు గనుక నా పరివారములో ఒకడు నాకు వారసుడగునని చెప్పగా

And, behold, the word of the LORD came unto him, saying, This shall not be thine heir; but he that shall come forth out of thine own bowels shall be thine heir.యెహోవా వాక్యము అతని యొద్దకు వచ్చి ఇతడు నీకు వారసుడు కాడు; నీ గర్భవాసమున పుట్టబోవుచున్నవాడు నీకు వారసుడగునని చెప్పెను.

And he brought him forth abroad, and said, Look now toward heaven, and tell the stars, if thou be able to number them: and he said unto him, So shall thy seed be.  మరియు ఆయన వెలుపలికి అతని తీసికొని వచ్చినీవు ఆకాశమువైపు తేరిచూచి నక్షత్రములను లెక్కించుటకు నీ చేతనైతే లెక్కించుమని చెప్పినీ సంతానము ఆలాగవునని చెప్పెను.

And he believed in the LORD; and he counted it to him for righteousness. 

అతడు యెహోవాను నమ్మెను; ఆయన అది అతనికి నీతిగా ఎంచెను.

If Abraham had no child all he could do was leave his property to someone else.

Evidently he had been considering Eleazer for this.

God mace this promise of an heir when Abraham's wife was barren  in any case past the age of childbearing (Heb11:11 

It was not humanly possible for them to have children.

But God is able to make anything happen and human impossibilities are as nothing to Him (Gen 18:14 Is any thing too hard for the LORD? At the time appointed I will return unto thee, according to the time of life, and Sarah shall have a son. యెహోవాకు అసాధ్యమైనది ఏదైన నున్నదా? మీదటికి ఈ కాలమున నిర్ణయకాలమందు నీ యొద్దకు తిరిగి వచ్చెదను. అప్పుడు శారాకు కుమారుడు కలుగుననెను.

Jer 32:17,27 Ah Lord GOD! behold, thou hast made the heaven and the earth by thy great power and stretched out arm, and there is nothing too hard for thee: యెహోవా, ప్రభువా సైన్య ములకధిపతియగు యెహోవా అను పేరు వహించువాడా, శూరుడా, మహాదేవా, నీ యధికబలముచేతను చాచిన బాహువుచేతను భూమ్యాకాశములను సృజించితివి, నీకు అసాధ్యమైనదేదియు లేదు.

Luke 1:37 For with God nothing shall be impossible.  దేవుడు చెప్పిన యేమాటయైనను నిరర్థ కము కానేరదని ఆమెతో చెప్పెను.

And he believed in the LORD; and he counted it to him for righteousness. This is the one of the key verses of the Bible. It is repeated in three books of the New Testament (Rom 4:3,9,22 

Gal 3:6 Even as Abraham believed God, and it was accounted to him for righteousness.  అబ్రాహాము దేవుని నమ్మెను అది అతనికి నీతిగా యెంచ బడెను.

Jam 2:23 And the scripture was fulfilled which saith, Abraham believed God, and it was imputed unto him for righteousness: and he was called the Friend of God.  విశ్వాసము అతని క్రియలతోకూడి కార్యసిద్ధి కలుగజేసెననియు, క్రియలమూలముగా అతని విశ్వాసము పరిపూర్ణమైనదనియు గ్రహించుచున్నావుగదా?

God did not count Abraham righteous because of his piety or obedience to God's call, but because of his faith.

In himself Abraham was a sinner, as we all are.

Men cannot change themselves into holy people, cannot create for themselves a righteous nature, cannot stand before God by their good works (Isa 64:6 But we are all as an unclean thing, and all our righteousnesses are as filthy rags; and we all do fade as a leaf; and our iniquities, like the wind, have taken us away.

Jer 13:23 Can the Ethiopian change his skin, or the leopard his spots? then may ye also do good, that are accustomed to do evil. 

Rom 3:10-12 As it is written, There is none righteous, no, not one: There is none that understandeth, there is none that seeketh after God. hey are all gone out of the way, they are together become unprofitable; there is none that doeth good, no, not one.

But if we trust God and believe God's promises, God counts our faith as righteousness (Isa 61:10 I will greatly rejoice in the LORD, my soul shall be joyful in my God; for he hath clothed me with the garments of salvation, he hath covered me with the robe of righteousness, as a bridegroom decketh himself with ornaments, and as a bride adorneth hersel

ICor 1:30 But of him are ye in Christ Jesus, who of God is made unto us wisdom, and righteousness, and sanctification, and redemption: 

2Cor 5:21  For he hath made him to be sin for us, who knew no sin; that we might be made the righteousness of God in him.

God makes us fit to His presence, even as He did Abraham.