The first thought I gather from the parable is that all men are Christ's sheep. That sounds a strange thing to say. What? all these men and women who, having run away from Him, are plunged in sin, like sheep mired in a black bog, the scoundrels and the profligates, the scum and the outcasts of great cities; people with narrow foreheads, and blighted, blasted lives, the despair of our modern civilisation--are they all His? And in those great wide-lying heathen lands where men know nothing of His name and of His love, are they all His too? Let Him answer, 'Other sheep I have'--though they look like goats to-day--'which are not of this fold, them also must I bring, and they shall hear My voice.' All men are Christ's, because He has been the Agent of divine creation, and the grand words of the hundredth Psalm are true about Him. 'It is He that hath made us, and we are His. We are His people and the sheep of His pasture.' They are His, because His sacrifice has bought them for His. Erring, straying, lost, they still belong to the Shepherd.
Notice next, the picture of the sheep as wandering. The word is, literally, 'which _goeth_ astray,' not 'which is gone astray.' It pictures the process of wandering, not the result as accomplished. We see the sheep, poor, silly creature, not going anywhere in particular, only there is a sweet tuft of grass here, and it crops that; and here is a bit of ground where there is soft walking, and it goes there; and so, step by step, not meaning anything, not knowing where it is going, or that it _is_ going anywhere; it goes, and goes, and goes, and at last it finds out that it is away from its beat on the hillside--for sheep keep to one bit of hillside generally, as any shepherd will tell you--and then it begins to bleat, and most helpless of creatures, fluttering and excited, rushes about amongst the thorns and brambles, or gets mired in some quag or other, and it will never find its way back of itself until some one comes for it.
'So,' says Christ to us, 'there are a great many of you who do not mean to go wrong; you are not going anywhere in particular, you do not start on your course with any intentions either way, of doing right or wrong, of keeping near God, or going away from Him, but you simply go where the grass is sweetest, or the walking easiest. But look at the end of it; where you have got to. You have got away from Him.'
Now, if you take that series of parables in Luke xv., and note the metaphors there, you will see three different sides given of the process by which men's hearts stray away from God. There is the sheep that wanders. That is partly conscious, and voluntary, but in a large measure simply yielding to inclination and temptation. Then there is the coin that trundles away under some piece of furniture, and is lost--that is a picture of the manner in which a man, without volition, almost mechanically sometimes, slides into sins and disappears as it were, and gets covered over with the dust of evil. And then there is the worst of all, the lad that had full knowledge of what he was doing. 'I am going into a far-off country; I cannot stand this any longer--all restraint and no liberty, and no power of doing what I like with my own; and always obliged to obey and be dependent on my father for my pocket-money! Give me what belongs to me, for good and all, and let me go!' That is the picture of the worst kind of wandering, when a man knows what he is about, and looks at the merciful restraint of the law of God, and says: 'No! I had rather be far away; and my own master, and not always be "cribbed, cabined, and confined" with these limitations.'