You are wrong to say the the ELCA bases it's teachings on scripture. They used to but have gone so far off course that universal salivation is accepted and as I understand even promiscuous sexual activity is not sin. The subject of gay pastors and gay marriage gets the most attention but they are far from the worst problems with the ELCA. Does LCMS actively reach out to members of the ELCA, inviting them to join a Christ centered Lutheran Church. In many rural areas there are only ELCA, catholic and a few methodist or prebs churches and those last too are sort as lost as the elca.